(19)

(11)

EP 0 495 884 A1

(12)

(43) Date of publication: 29.07.1992 Bulletin 1992/31 (21) Application number: 90915843.0 (22) Date of filing: 03.10.1990

(51) International Patent Classification (IPC):  D21C 7/ 08( . ) (86) International application number: PCT/SE1990/000649 (87) International publication number: WO 1991/005907 (02.05.1991 Gazette 1991/10)

(84) Designated Contracting States: AT SE (30) Priority: 17.10.1989 SE 19890003417 (71) Applicant: SUNDS DEFIBRATOR INDUSTRIES AKTIEBOLAG S-851 94 Sundsvall (SE)	(72) Inventors: EDLUND, E., G., Runo S-852 66 Sundsvall (SE) ERNERFELDT, K., Bertil S-860 20 Njurunda (SE) (74) Representative: Sundqvist, Hans  Sunds Defibrator Industries Aktiebolag Patents Dept. Strandbergsgatan 61 S-112 51 Stockholm S-112 51 Stockholm (SE)